html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.centerBox {
  position: absolute;
  width: 640px;
  height: 480px;
  background: transparent;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  /* BEGIN cross-browser nearest neighbor filtering */
  image-rendering: optimizeSpeed;     /* CSS3 */
  image-rendering: optimize-contrast; /* CSS3 */
  image-rendering: crisp-edges;       /* CSS3 */
  image-rendering: -moz-crisp-edges;  /* Gecko */
  image-rendering: -webkit-optimize-contrast; /* Webkit */
  -ms-interpolation-mode: nearest-neighbor;   /* Trident */
  /* END cross-browser nearest neighbor filtering */
}
#overlay {
  z-index: 1;
}
#messages span {
    cursor: pointer;
    display: block;
    font-family: verdana, sans-serif;
    font-size: 30px;
    
    position: absolute;
    text-align: center;
    left: 50%;
    top: 50%;

    -webkit-border-radius: 15px;
    -moz-border-radius: 15px;
    border-radius: 15px;

    background: black;
    color: white;
    opacity: 0.75;
}
#messages {
}
#options {
  position: absolute;
  bottom: -1px;
  width: 100%;
  background: black;
  opacity: 0.5;
}
#options form {
  padding-left: 10px;
  word-spacing: 10px;
}
#screen {
  border: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
}
#debug {
  display: none;
  width: 800;
  height: 190;
  border: 0;
  font-family: monospace;
  overflow: auto;
  margin-top: 5px;
}
body {
  background: black;
  color: white;
  font: arial;
  font-family: verdana, sans-serif;
  font-size: 12px;
}
